body{
  background: #F8F9FB;
}
.top_header {
  // background-color: black;
  position: absolute;
}

.top_header .nav a {
  color: #ffffff;
  text-decoration: none;
}

.top_header .login_reg a:nth-child(1) {
  color: rgb(255, 255, 255);
  border: 1px solid #d1d1d1 !important;
}

.top_header .login_reg a:nth-child(2) {
  color: #ffffff;
}
.active {
  color: #fff !important;
  border-bottom: 3px solid #fff !important;
}

.Backboard {
  width: 100%;
  height: 360px;
  background-color: black;

  .introduce_box {
    width: 1200px;
    height: 290px;
    background-color: #fff;
    margin: auto;
    display: flex;
    position: relative;
    top: 215px;

    .introduce_left {
      width: 600px;
      height: 100%;
      background-color: white;
      padding: 49px 0px 0px 49px;

      h1 {
        font-size: 24px;
      }

      p {
        width: 484px;
        font-size: 14px;
        color: #666;
        line-height: 24px;
        display: -webkit-box !important;
        text-overflow: ellipsis;
        overflow: hidden;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
      }
    }

    .introduce_rigth {
      width: 600px;
      height: 100%;

      img {
        width: 600px;
        height: 100%;
        object-fit: cover
      }
    }
  }
}

.intro_cont {
  width: 1100px;
  // background: rgb(235, 213, 255);
  margin: 145px auto;

  .intro_a {
    // background-color: blue;
    padding-top: 80px;
  }

  .intro_titlt {
    font-size: 14px;
    color: #181818;
    line-height: 24px;
    margin-top: 22px;
  }


  .intro_we {
    width: 100%;
    height: 30px;
    // background-color: #b3b3b3;
    line-height: 30px;
    text-align: right;
    margin-top: 20px;

    i {
      background-color: #1271ef;
      width: 14px;
      height: 4px;
      display: inline-block;
    }

    span {
      text-align: right;
      font-size: 12px;
    }
  }

  .profit {
    font-size: 30px;
    margin-top: 50px;
  }

  .intro_img {
    margin: 70px 0px;
    img {
      width: 100%;
      height: 618px;
    }
  }
}

footer{
  background: #fff;
}